Concrete block molding machine



Nov. 7, 1950 J. B. WHITE 2,528,931

CONCRETE BLOCK MOLDING MACHINE Filed Nov. 18, 1946 7 Sheets-Sheet 1 Nov.7, 1950 J. 5. WHITE 2,528,931

CONCRETE BLOCK MOLDING MACHINE Filed Nov. 18, 1946 '7 Sheets-Sheet 2Nov. 7, 1950 J. B. WHITE 2,528,931

CONCRETE BLOCK MOLDING MACHINE Filed Nov. 18, 1946 7 SheetsSheet 3awuwwbo b Nov. 7, 1950 I J. B. WHITE CONCRETE BLOCK MOLDING MACHINE '7Sheets-Sheet 4 Filed Nov. 18, 1946 Nov. 7, 1950 J. B. WHITE CONCRETEBLOCK MOLDING MACHINE 7 Sheets-Sheet 5 Filed Nov. 18, 1946 26 21 JafinfiWife W M emu- 5 Nov.7, 1950 J. B. WHITE CONCRETE BLOCK MOLDING MACHINE 7Sheets-Sheet 6 Filed Nov. 18, 1946 fw ws Nov. 7, 1950 J. B. WHITECONCRETE BLOCK MOLDING MACHINE 7 SheetsSheet 7 Filed Nov. 18, 1946awe/whom 1 /021115. W/zz'fe Ill/l Patented Nov. 7, 1950 UNITED STATESPATENT OFFICE CONCRETE BLOCK MOLDING MACHINE John B. White, WestSpringfield, Mass. Application November 18, 1946, Serial No. 710,630

This invention relates to a concrete block molding machine.

An object of this invention is to provide a cement block making machinewhich is manually operable and includes an improved means for ejectingthe block from the mould.

Another object of this invention is to provide in a machine of thiskind, an improved elevating and ejecting means for removing. the formedblock which will provide an initial high pressure for breaking contactbetween the block and the mould and cores.

A further object of this invention is to provide in a machine of thistype, an improved slidable hopper with means for locking the hopper ineither operative or inoperative position.

A further object of this invention is to provide in combination with amachine of this kind, an improved electrical vibrator whereby theplastic concrete will be compacted.

With the above and other objects in view, my invention consists in thearrangement, combination and details of construction disclosed in thedrawings and specification, and then more particularly pointed out inthe appended claims.

In the drawings,

Figure l is a detail front elevation of a concrete block making machineconstructed according to an embodiment of this invention,

Figure 2 is a detail side elevation of the device,

Figure 3 is a plan view of the device,

Figure 4 is a fragmentary sectional view taken on the line 4-4 of Figure2, i 2

Figure 5 is afragmentary sectional view taken on the line 5--5 of Figure2,

Figure 6 is a fragmentary sectional view taken on the line 66 of Figure3, i

Figure 7 is a fragmentary sectional view take on the line 'l! of Figure6,

Figure 8 is a fragmentary side elevation, partly broken away and insection, of the pallet operating linkage,

Figure 9 is a fragmentary on the line 99 of Figure 7,

Figure 10 is a fragmentary sectional view taken on the line I9I0 ofFigure 6,

sectional view taken 5 Claims. (CI. 25-41) Figure 11 is a fragmentarysectional view taken 7 on the line Hll of Figure 6,

Figure 12 is a fragmentary sectional view taken on the line l2l2 ofFigure 6,

Figure 13 is a fragmentary sectional view taken on the line I3-I3 ofFigure 4,

Figure 14 is a fragmentary exploded sectional view showing the palletand the operating pins or rods therefor,

Referring to the drawings, the numeral 20 designates generally a hollowbase hich is formed of front and rear Walls 2! and 22, opposite sideWalls 23 and 24 and a bottom Wall 25. The base 29 has extendingtransversely thereof at the upper end, angle members 26: and 21. A.mould generally designated as 28 is disposed above the base 29 and isyieldably supported on a. pair of bowed springs 29. The springs 2 9 havetheir lower ends secured by fastening members 39 to the upper end of thebase 29, and the opposite end walls SI of the mould 28 have anglemembers 32 secured thereto. 1

The bowed intermediate portions of the springs 29 are secured to thelower sides of theangle members 32 by fastening members 33. The mould 28also includes opposite sides 34 and preferably the opposite ends areformed of horizontal channel members having upper and lower flanges 35and 36 respectively. The upper angle members 26 and 2'! have fixedthereto a pair of elongated rail forming bars 31 which have formedintegral with their rear ends a plate 38. The plate 38 extendsrearwardly of the mould box 28 and issups ported rearwardly of the mouldbox by means of bracket members 39.

The plate 38 forms a closed stationary bottom wall for a movable hoppergenerally designated as 40. The hopper 40 has an open lower end taperingdownwardly and inwardly and laterally projecting flanges 4| extend fromthe opposite lower sides of the hopper and slidably engage the plate 38when the hopper is in inoperative position, and slidably engage therails 31 when the hopper is moved forwardly to delivering or operativeposition.

In order to provide .a means whereby the hopper may be readilypulledforward and locked in either its forward or rearward position, Ihaveprovided a pair of locking cam members 42 which are mounted on stubshafts 43. The shafts 43 are journaled through the vertical side 44 of abearing bracket which also includes a spacer bushing 45 interposedbetween the cam 42 and the vertical bracket side 44. The bracket 44 alsoincludes an upper horizontal side 46 engaging over the flange 4i andsecured thereto by means of one or more fastening members 41.

As shown in Figure 13, the vertical bracket side 44 is of substantiallytriangular configuration. The stub shaft 43 has a head 48 fixed to theouter end thereof and the lower end of a locking lever 49 is fixed tothe head 48 by fastening members 59. There are two of these cams 42, asshown in Figure 4, and two operating levers 49 which are connectedtogether by means of "a' v connecting bar 5i which constitutes anoperator by means of which both levers 49 can be operated together. I

The rearward swinging of the levers 49 is limited by means of Stopmembers 52 which are carried by the hopper 40. The mould box 28 hasdisposed therein pairs of hollow core members 53. The core members 53extend downwardly through the mould box and are fixedly secured toinverted U-shaped supporting bars 54 fixed by fastening members 55 tothe supporting angle members 26 and 21. A removable pallet 55 looselyengages. within'the mould box 28, being provided With openings throughwhich the core members 53' loosely engage. The pallet 56'has' formedintegral with the lower side thereof intersecting ribs 5'! and 58.

The pallet 56 is supported in operative position at the lower end of themould box 28 upon a plurality of combined pallet supporting and ejectingrods or pins 59. The pallet supporting and ejecting members 59 aresecured to a pair of transversely extending bars 60 which at. theiropposite ends are. secured to the horizontal upper side Bl of an angleshaped slide 52. The slide 62 includes a vertical side 63 havingextending outwardly therefrom a pair of slide blocks 64 and 65. Theslide blocks 64 and 65 slidably engage vertically disposed guide bars 65which at the lower and upper ends are fixed in stationary bushings 61carried by the base 25', and the side of the frame.

The opposite side walls of the base 2!) are formed with elongated slots68 through which the In order to provide for the compacting of the 7plastic cement after the cement has been discharged into the mould box28, I have provided an electric vibrator 15 which is carried by asupport bracket '55 secured to the base 20 and connected by means of apm I? to a depending 1 bracket 18 which is fixed to the lower side ofthe plate 38. The electric vibrator'l5 isof the solenoid type, whichincludes a coil 19 and ,a vibrating core 86. After the cement has beencompacted in the mould box 28 and the cement has initially set, thecement block is removed by means of a pallet elevating constructionwhich includes an upper link 8! pivot/ally secured as at '82 to anupwardly extending supporting bracket 83 which is fixed to the base 20.The lower slide block 65 has extending outwardly therefrom a pin or stud84 with which the lower endof a movable link 85 is pivotally connected.The upper end of the link 85 is also pivotally connected to a pin 86which engages through the lower end of the stationary link 8! and thepin 86 extends outwardly through an elongated slot 87 which is formed inan elongated lever 88. The lever 88 is fixedly secured at its lower endon a shaft 89 which may extend through the base so that the twooperating levers will work as a unit;

The base 2!] may include removable plates 99 on the rear side thereof,and 92 on the forward side thereof.

v The rear plate or' closure 3% is adapted to be locked. by meansof alatching member 9| and the closure plate 92 is adapted to be removablysecured to the front of the base 25 by means of offset upper and lowerlugs 93 and 94 which engage the vertical side of the angle member 26 anda lower horizontal bar 95 respectively.

In the use and operation of this machine, the

hopper 40 may be pulled forwardly by grasping the handle 96, which iscarried by the forward end of the hopper, the cam levers '53 at thistime being in their rearmost released position. The hopper 40 is pulledover the mould box 28 and at this time the cam levers 49 are pulledforwardly to lock the hopper over the mould box. The plastic concrete isthen poured into the hopper, the mould box being filled and the excessof concrete will be disposed in the lower portion of the hopper 40. wThe vibrator T5 is then operated to compact the plastic concrete'andwhen the concrete has been compacted to the desired degree, the hopper40 may be moved rearwardly to inoperative position. The rearwardmovement of the hopper A9 to its inoperative position will scrape theexcess concrete projecting above the mould box 28 and this excesswill'be carried onto the plate 38. At the time the mould box isreceiving the concrete, the links BI and will be disposed inalignmentasshowninFigure 2. T

After th concrete has set to the desired degree where the now formedblocks may be removed from the mould box, the levers 8B are rockedforwardly. Forward rocking ofv the levers 88 will cause link 85 tobepulled upwardly at its lower end, thereby moving the slide member 82and causing the pallet supporting pins or bars 59 to push the pallet 56upwardly.

By providing the link elevator for the pallet as hereinbefore described,initial high leverage will be obtained to' break the contact of theblock with the walls of the mould box. After the block has been loosenedfrom the box 28, the further elevating of the block is relatively easy,assisted by the two counterweights, and is obtained by further forwardswinging of the elevating levers 89 which will dispose the links 8i and85 on obtuse angles relative to each other.

Where it is desiredto form smaller blocks than will be provided by themould box 28, end plates 34 and liner plates 91 may be disposed on theinside of the box 28, as shown in Figure 7. These end and liner platesmay b secured to the inside of the box 28 by fastening members 9 8.

I do not mean to confine myself to the exact details of constructionherein disclosed, but claim all variations falling With-in the purviewof the appended claims.

What I c aim is- I 1. A cement block making machine comprising a base, amould member, means yieldably supporting said mould member on said base;core means, means supporting said core means on said base, a palletloosely engageable in said mould member, combined pallet supporting andelevating means movably carried by said base, and means for raising orlowering said elevating means, said latter means including pairs ofpivotallyconnect'ed links disposed in substantially vertical position,means fixed to said base pivotally connected to the uppermost ones ofsaid links,

means pivotally connecting. the lowermost. ones of said links to saidpallet supporting and elevating means, and a pair of operating leverspivotally connected to said base and formed with elongated slotsengageable'with. the pivotal conheeti ns etween said links for effectingangular movement of said pairs of links and vertical movement of saidsupporting and elevating means.

2. A cement block making machine comprising a base, a mould member,means yieldably supporting said mould member on said base, means forvibrating said mould member, core means, means supporting said coremeans on said base, a pallet loosely engageable in said mould member,combined pallet supporting and elevating means movably carried by saidbase, and means for raising or lowering said elevating means, saidlatter means including pairs of pivotally connected links disposed insubstantially vertical positionQmeans fixed to said base pivotallyconnected to the uppermost ones of said links, means pivotallyconnecting the lowermost ones of said links to said pallet supportingand elevating means, and a pair of operating levers pivotally connectedto said base and formed with elongated slots engageable With thepivotalconnections between said links for effecting angular movement of saidpairs of links and vertical movement of said supporting and elevatingmeans.

3. A cement block making machine comprising a base, a mould member,means yieldably mounting said mould member on said base, and means forejecting the block from said mould member, said ejective means includinga pair of vertically movable slides, guide means for said slides carriedby said base, a pair of pivotally connected slide suspension links foreach slide, means pivotally supporting the uppermost of said links fromsaid base, means pivotally connecting the lowermost link of each pair tothe related one of said slides, and means for varying the angularrelation of the members of each pair of links to thereby vertically movesaid slides.

4. A cement block making machine comprising a base, a mould member,means yieldably mounting said mould member on said base, means forvibrating said mould member, and means for ejecting the block from saidmould member, said elective means including a pair of vertically movablslides, guide means for said slides carried I by said base, a pair ofpivotally connected slide suspension links for each slide, meanspivotally supporting the uppermost of said links from said base, meanspivotally connecting the lowermost link of each pair to the related oneof said slides, and means for varying the angular relation of themembers of each pair of links to thereby vertically move said slides.

5. A cement block making machine comprising a base, a mould member,means yieldably mounting said mould member on said base, and means forejecting the block from said mould member, said ejective means includinga pair of vertically movable slides, guide means for said slides carriedby said base, a pair of slide suspension links for each slide, meanspivotally supporting the uppermost of said links from said base, meanspivotally connecting the lowermost link of each pair to the related oneof said slides, and means for varying the angular relation of themembers of each pair of links to thereby vertically move said slides,each pair of links including an elongated pivot connecting said linkstogether, and said latter named means including a pair of rock leverspivotally mounted on said base, each of said levers being formed with anelongated slot through which said pivot loosely engages.

JOHN B. WHITE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,590,429 Emert June 29, 19262,270,829 Wellnitz Jan. 20, 1942 2,311,480 Shugart et al Feb. 16, 1943FOREIGN PATENTS Number Country Date 412,893 France July 25, 1910 505,782France Aug. 6, 1920

